A court physician has determined that the man accused of stabbing a Harrington Hospital nurse Wednesday suffers from paranoid schizophrenia and claims to "hear voices" from TVs and radios.

Conor O'Regan, 24, of Southbridge, was arraigned in Worcester Central District Court Thursday and ordered to be held without bail for three days pending a dangerousness hearing July 3 in Dudley District Court. He will also be evaluated at Bridgewater State Hospital for 20 days.

According to an incident report, O'Regan admitted to police during an interview after his arrest that the victim, Elise Wilson, 65, was picked at random. O'Regan told investigators he was seeking revenge for what he considered unsatisfactory treatment for a wrist injury he was having treated at the hospital, three weeks ago.

O'Regan told police he understood what he did was wrong, "but something needed to be done." He added that someone had commanded him to "be a warrior."

Following a pre-arraignment evaluation, Dr. Stephanie Hanson told the court that O'Regan suffers from mental illness. She noted O'Regan's inability to maintain eye contact and delayed responses to questions during his evaluation.

Hanson said O'Regan appeared to be "internally occupied."

During the evaluation, O'Regan claimed that the TV and radio are sending him messages and talking about him, and that people from his past are trying to kill him. O'Regan even told her "I kind of wish I would die."

Hanson believes O'Regan might have been self-medicating with drugs and alcohol.

Wilson was last reported to be in serious but stable condition after the Wednesday morning stabbing inside the Southbridge hospital's ER.

Prosecutors say O'Regan used a sharpened silver kitchen knife, which he got from his parents house, to commit the stabbing.

With the weapon concealed under his pants and shirt, O'Regan admitted himself into the hospital claiming he was suffering from pain from his past wrist injury.

Shortly after Wilson brought O'Regan to a triage room, he began stabbing her, authorities said. He told police he tried stabbing her in the face.

A public safety officer responded to the triage room after hearing screams for help, police said. O'Regan exited the room and allegedly pointed the knife at the PSO, causing him and other staff members to run for cover.

O'Regan then fled the scene.

Officers responded to the call for a stabbing around 10:15 a.m. When officers arrived, they witnessed a trail of blood leading from the emergency room to the triage room.

Wilson was in the emergency room being treated for a severe laceration to her left upper arm. After reviewing her condition, police requested a medical helicopter transport to UMass Memorial Medical Center - University Campus in Worcester.

The search for O'Regan then began. Officers began by reviewing security footage of the parking lot. They identified his car.

Because O'Regan checked into the hospital with his information, officer were quickly able to identify him.

Police were dispatched to his home on 320 Main Street and knocked on the door of apartment 2. When O'Regan answered the door, police noticed his hands were blood stained.

He told police officers, "The f*** people up at Harrington Hospital." Afterwards, he was arrested without incident.

Police searched his home and car and discovered the knife and clothing. Both items tested positive for blood.

In addition to the assault charge on Wilson, police also charged O'Regan with assault with a dangerous weapon for pointing knife at the PSO, Brody Blair.